Briefly describe how the epicenter of an earthquake is located?

Answer 1

With the help of seismograph you can find arrival time of secondary wave and primary wave. The difference in time in seconds multiplied by 8 will give you the distance of focus the starting point of earthquake. Even though the speed of these waves differs according the geographical condition the difference in speed is almost constant and it is 8 k/m per second. Therefore you can draw a circle from that station .The focus point should be some where on the circumference of the circle. When you get the data from other seismic station you can draw another circle from that station that will cut the previous circle in two points .One among the two point must be the focus point. When you draw the circle in the same way from third station this will pass through one among the two meeting point of the previous circles. This point is focus.The imaginary point just above focus on earth is the epicenter. To have clear idea about this visit my slide show .I have also found a new method to find the epicenter from single station using my direction finder to gether with seismograph.It is approximate quite enough to issue Tsunami warning. I have issued the warning 2 hours before Tsunami struck our Indian coast but it was ignored. My web site . please be patient to down load .

Answer 2

The focus is the point underground where the earthquake rupture started, and the epicenter is the point on the ground directly above the focus.

Describe_the_focus_and_the_epi_of_an_earthquake

Answer 3

The epicenter is the spot on Earth that an earthquake occurred. The epicenter lines up with the focus, which is the spot under the Earth where the earthquake occurred.

Answer 4

They tried to find the epicenter of the earthquake.

Answer 5

First point to feal earthquake.